Engine cooling system

Details Engine cooling system Engine cooling system

1997-03-11

1999-03-02

Basinger, Sherman

Marine propulsion

Means to control the supply of energy responsive to a sensed...

440 88, B63H 2028

Patent

active

058762566

ABSTRACT:
A liquid cooling system for an internal combustion engine of an outboard motor is disclosed. The cooling system includes a pump for delivering coolant to one or more coolant passages in the engine. At least one thermostat is provided for controlling the flow of coolant through the engine to one or more return lines which extend to a coolant pool extending about a lubricating oil reservoir. A pressure relief valve is provided between the pump and thermostat for relieving coolant from the engine upon excessive coolant pressure. The relieved coolant is preferably either delivered to a drain, a second coolant pool extending about a muffler, or the first coolant pool. Preferably, a diverter is provided for controlling the flow of the relieved coolant. When a temperature of the lubricating oil is high, the relieved coolant is preferably diverted to the first coolant pool for additionally cooling the oil in the reservoir, and when the temperature of the oil is low, the relieved coolant is preferably either diverted to the second coolant pool or the coolant drain for passage out of the motor.

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